Formula to compute someone's age if you enter their B-day
Dates are stored in Excel as the number of days elapsed since some
reference date - the date is 31st December 1899. So, if C5 is empty,
there are 106 years between the reference date and today. To guard
against this you could have something like:
=IF(C5=0,0,DATEDIF(C5,NOW(),"y"))
Hope this helps.
Pete
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